close up of feet.. looks like a spur.. ??? also read the following and think its safe to say s(he) ticks all the boxes...
while the male crest will have streamer-type feathers and will look more swept-back. All the others have poppoms but this one looks longer behind with more feathering swept backwards..
In males the wattle will be more pronounced and slightly rounded. Definitely more developed than the others....
Examine the feathers on the hackles, saddle and tail. Male feathers in those areas will be more pointed and harder then the usual soft, fluffy down.. The tail feathers are harder like normal feathers in this area..
Would definitely explain why s(he) will not back down to the bigger hens..